GlobalConfiguration Configure not present after Web API 2 and NET 4 5 1 migration

Question

I recently started following this guide to migrate my project to  NET 4 5 1 and Web Api 2   The very first thing MS developer Rick Anderson asks you to do is change   WebApiConfig Register GlobalConfiguration Configuration     to  GlobalConfiguration Configure WebApiConfig Register     in the global asax file  Yet this is giving me an error when I try to build      Error  1    System Web Http GlobalConfiguration  does not contain a definition for  Configure    My project is currently on MVC 5 and Web Api 2 and  NET 4 5 1  yet I think System Web Http still thinks it s the  NEt 4 0 version   How can I go about fixing this   Thank you   Edit   Here are my assembly bindings    lt assemblyBinding xmlns  urn schemas-microsoft-com asm v1  gt     lt dependentAssembly gt       lt assemblyIdentity name  System Net Http Formatting  publicKeyToken  31BF3856AD364E35  culture  neutral   gt       lt bindingRedirect oldVersion  0 0 0 0-5 0 0 0  newVersion  5 0 0 0   gt     lt  dependentAssembly gt     lt  --    lt dependentAssembly gt       lt assemblyIdentity name  System Web Helpers  publicKeyToken  31bf3856ad364e35   gt       lt bindingRedirect oldVersion  1 0 0 0-3 0 0 0  newVersion  3 0 0 0   gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web Mvc  publicKeyToken  31bf3856ad364e35   gt       lt bindingRedirect oldVersion  1 0 0 0-5 0 0 0  newVersion  5 0 0 0   gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web WebPages  publicKeyToken  31bf3856ad364e35   gt       lt bindingRedirect oldVersion  1 0 0 0-3 0 0 0  newVersion  3 0 0 0   gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web Http  publicKeyToken  31bf3856ad364e35   gt       lt bindingRedirect oldVersion  1 0 0 0-5 0 0 0  newVersion  5 0 0 0   gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web WebPages Razor  publicKeyToken  31bf3856ad364e35   gt       lt bindingRedirect oldVersion  1 0 0 0-3 0 0 0  newVersion  3 0 0 0   gt     lt  dependentAssembly gt  -- gt   lt  assemblyBinding gt    Everything commented out after the top was commented because I was getting the error      Warning    2   Found conflicts between different versions of the same dependent assembly that could not be resolved   These reference conflicts are listed in the build log when log verbosity is set to detailed    and getting rid of the hard bindings was fixing that

User · Answer

If the issue remain after uninstalling and installing Microsoft AspNet WebApi WebHost then also add followings in web config for globalconfiguration to work     lt dependentAssembly gt           lt assemblyIdentity name  System Web Http  publicKeyToken  31bf3856ad364e35    gt           lt bindingRedirect oldVersion  0 0 0 0-5 0 0 0  newVersion  5 2 0 0    gt         lt  dependentAssembly gt

User · Answer

Install-Package Microsoft AspNet WebApi Core  worked just fine

User · Answer

My problem was that the nuget package manager did not do a real update but the files contained references to older versions  so i first removed all the installed mvc related packages  including razor and web api  then installed them over again and updating the version of the razor in views web config to version 3 0 0

User · Answer

GlobalConfiguration class is part of Microsoft AspNet WebApi WebHost nuget package   Have you upgraded this package to Web API 2

User · Answer

GlobalConfiguration Configure API is available in  Microsoft AspNet WebApi WebHost  version  5 2 3   and not in  Microsoft AspNet WebApi WebHost  version  4 0 0

User · Answer

It needs the system web http webhost which is part of this package   I fixed this by installing the following package   PM gt  Install-Package Microsoft AspNet WebApi WebHost    or search for it in nuget https   www nuget org packages Microsoft AspNet WebApi WebHost 5 1 0

User · Answer

this resolved this issue by adding namespace to Global asax cs file    using System Web Http    this resolved the issue

User · Answer

None of these ideas helped my project using MVC 5 2 2    System web Http 5 2 2 was already installed Deleting the Packages folder and completely re-downloading all NuGet libraries did nothing Web config already had a dependentAssembly entry for System Web Http   Forcing a reinstall corrected the problem  From the NuGet package manager console   update-Package -reinstall Microsoft AspNet WebApi WebHost

User · Answer

You may want to check that your project has Microsoft AspNet WebApi WebHost installed  As it turns out  in my case  Microsoft AspNet WebApi WebHost was installed in another project  but not the particular project that needed it  In your packages config  check that a line like this is there    lt package id  Microsoft AspNet WebApi WebHost  version  5 1 1  targetFramework  net45    gt    If that is not present  you don t have Microsoft AspNet WebApi WebHost installed in your project  You can either install using Nuget Package Manager or through the Package Manager Console  To install from the Package Manager Console  run this command   Install-Package Microsoft AspNet WebApi WebHost

User · Answer

None of these solutions worked for me  I had a tangle of Nuget packages that couldn t update because of circular dependencies on each other   I would up having to fix this the old-fashioned way  I created a new MVC web api project and manually copied System Web Http and System Web Http WebHost from the new project into the Nuget folders of the exisitng solution  From there I updated the references by  OMG   browsing  and fixed the problem

User · Answer

As well as using Package manager console to get nuget to update the project with Install-Package Microsoft AspNet WebApi WebHost for missing GlobalConfiguration   I needed Install-Package Microsoft AspNet WebApi SelfHost for missing using System Web Http

[c#] GlobalConfiguration.Configure() not present after Web API 2 and .NET 4.5.1 migration

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